C11112331312111112111133132313331333133313232212111112111113213332321   >>    C1111233131211111211113313231333133313331323221211111211111321333232   <<    C11112331312111112111133132313331333133313232212111112111113213332323   >>      C11112331312111112111133132313331333133313232212111112111113213332322   >>